Bug 888626
| Summary: | Windows guest consumes higher cpu usages when do S3/S4 with qemu-ga service enabled | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Qunfang Zhang <qzhang> |
| Component: | qemu-kvm | Assignee: | Jeff Cody <jcody> |
| Status: | CLOSED WONTFIX | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.4 | CC: | acathrow, amit.shah, areis, bsarathy, jcody, juzhang, lcapitulino, lnovich, michen, mkenneth, rhod, sluo, virt-maint |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-06-05 22:15:26 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 912287 | ||
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Description
Qunfang Zhang
2012-12-19 03:23:46 UTC
Host top info after resume from S3: Swap: 8028152k total, 1032k used, 8027120k free, 4249044k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 32152 root 20 0 2608m 2.1g 5432 R 120.3 28.1 1:59.91 qemu-kvm Host top info during S4 (always stuck on the suspend stage, not finish) top - 19:20:44 up 1 day, 6:05, 6 users, load average: 1.70, 0.85, 0.36 Tasks: 225 total, 2 running, 223 sleeping, 0 stopped, 0 zombie Cpu(s): 48.4%us, 1.7%sy, 0.0%ni, 31.5%id, 18.3%wa, 0.0%hi, 0.1%si, 0.0%st Mem: 7883316k total, 6805156k used, 1078160k free, 151508k buffers Swap: 8028152k total, 1152k used, 8027000k free, 4083496k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 23749 root 20 0 2410m 2.0g 4572 S 202.5 26.5 2:06.45 qemu-kvm Can you please test Linux guest as well? Amit, This issue only happens on windows guest. Thanks, Qunfang This issue also happens after repeat other qemu-ga command.
After finish:
for i in $(seq 1 1000) ; do echo { "execute": "guest-ping"} | nc -U /tmp/qga.sock ; sleep 2; echo $i; done
qemu-ga process inside guest will consume 25% host cpu resource. Before running the above script, the qemu-ga cpu usage is 0. Even the script has been finished for a few mins, the cpu usage is still 25%.
Implement S3 will easily reproduce the issue. And running the script in comment 5 just randomly reproduce. And I tested win7-32&64, winXP-32, win2k8-r2, all have the problem. S3/S4 support is tech-preview in RHEL6 and it'll be promoted to fully supported at some point, but only in RHEL7. Therefore we're closing all S3/S4 related bugs in RHEL6. New bugs will be considered only if they're regressions or break some important use-case or certification. RHEL7 is being more extensively tested and effort from QE is underway in certifying that this particular bug is not present there. Please reopen with a justification if you believe this bug should not be closed. We'll consider them on a case-by-case basis following a best effort approach. Thank you. |